window-scroll.c - tmux - Rivoreo Source Code Repositories

 /* $Id: window-scroll.c,v 1.41 2009-09-11 14:13:52 tcunha Exp $ */

 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */

 #include <sys/types.h>

 #include <string.h>

 #include "tmux.h"

 struct screen *window_scroll_init(struct window_pane *);
 void	window_scroll_free(struct window_pane *);
 void	window_scroll_resize(struct window_pane *, u_int, u_int);
 void	window_scroll_key(struct window_pane *, struct client *, int);

 void	window_scroll_redraw_screen(struct window_pane *);
 void	window_scroll_write_line(
     	    struct window_pane *, struct screen_write_ctx *, u_int);
 void	window_scroll_write_column(
     	    struct window_pane *, struct screen_write_ctx *, u_int);

 void	window_scroll_scroll_up(struct window_pane *);
 void	window_scroll_scroll_down(struct window_pane *);
 void	window_scroll_scroll_left(struct window_pane *);
 void	window_scroll_scroll_right(struct window_pane *);

 const struct window_mode window_scroll_mode = {
 	window_scroll_init,
 	window_scroll_free,
 	window_scroll_resize,
 	window_scroll_key,
 	NULL,
 	NULL,
 };

 struct window_scroll_mode_data {
 	struct screen	screen;

 	struct mode_key_data	mdata;

 	u_int		ox;
 	u_int		oy;
 };

 struct screen *
 window_scroll_init(struct window_pane *wp)
 {
 	struct window_scroll_mode_data	*data;
 	struct screen			*s;
 	struct screen_write_ctx	 	 ctx;
 	u_int				 i;
 	int				 keys;

 	wp->modedata = data = xmalloc(sizeof *data);
 	data->ox = 0;
 	data->oy = 0;

 	s = &data->screen;
 	screen_init(s, screen_size_x(&wp->base), screen_size_y(&wp->base), 0);
 	s->mode &= ~MODE_CURSOR;

 	keys = options_get_number(&wp->window->options, "mode-keys");
 	if (keys == MODEKEY_EMACS)
 		mode_key_init(&data->mdata, &mode_key_tree_emacs_copy);
 	else
 		mode_key_init(&data->mdata, &mode_key_tree_vi_copy);

 	screen_write_start(&ctx, NULL, s);
 	for (i = 0; i < screen_size_y(s); i++)
 		window_scroll_write_line(wp, &ctx, i);
 	screen_write_stop(&ctx);

 	return (s);
 }

 void
 window_scroll_free(struct window_pane *wp)
 {
 	struct window_scroll_mode_data	*data = wp->modedata;

 	screen_free(&data->screen);
 	xfree(data);
 }

 void
 window_scroll_pageup(struct window_pane *wp)
 {
 	struct window_scroll_mode_data	*data = wp->modedata;
 	struct screen			*s = &data->screen;
 	u_int				 n;

 	n = 1;
 	if (screen_size_y(s) > 2)
 		n = screen_size_y(s) - 2;
 	if (data->oy + n > screen_hsize(&wp->base))
 		data->oy = screen_hsize(&wp->base);
 	else
 		data->oy += n;

 	window_scroll_redraw_screen(wp);
 }

 void
 window_scroll_resize(struct window_pane *wp, u_int sx, u_int sy)
 {
 	struct window_scroll_mode_data	*data = wp->modedata;
 	struct screen			*s = &data->screen;
 	struct screen_write_ctx	 	 ctx;
 	u_int				 i;

 	screen_resize(s, sx, sy);
 	screen_write_start(&ctx, NULL, s);
 	for (i = 0; i < screen_size_y(s); i++)
 		window_scroll_write_line(wp, &ctx, i);
 	screen_write_stop(&ctx);
 }

 void
 window_scroll_key(struct window_pane *wp, unused struct client *c, int key)
 {
 	struct window_scroll_mode_data	*data = wp->modedata;
 	struct screen			*s = &data->screen;
 	u_int				 n;

 	switch (mode_key_lookup(&data->mdata, key)) {
 	case MODEKEYCOPY_CANCEL:
 		window_pane_reset_mode(wp);
 		break;
 	case MODEKEYCOPY_LEFT:
 		window_scroll_scroll_left(wp);
 		break;
 	case MODEKEYCOPY_RIGHT:
 		window_scroll_scroll_right(wp);
 		break;
 	case MODEKEYCOPY_UP:
 		window_scroll_scroll_up(wp);
 		break;
 	case MODEKEYCOPY_DOWN:
 		window_scroll_scroll_down(wp);
 		break;
 	case MODEKEYCOPY_PREVIOUSPAGE:
 		window_scroll_pageup(wp);
 		break;
 	case MODEKEYCOPY_NEXTPAGE:
 		n = 1;
 		if (screen_size_y(s) > 2)
 			n = screen_size_y(s) - 2;
 		if (data->oy < n)
 			data->oy = 0;
 		else
 			data->oy -= n;
 		window_scroll_redraw_screen(wp);
 		break;
 	case MODEKEYCOPY_HALFPAGEUP:
 		n = screen_size_y(s) / 2;
 		if (data->oy + n > screen_hsize(&wp->base))
 			data->oy = screen_hsize(&wp->base);
 		else
 			data->oy += n;
 		window_scroll_redraw_screen(wp);
 		break;
 	case MODEKEYCOPY_HALFPAGEDOWN:
 		n = screen_size_y(s) / 2;
 		if (data->oy < n)
 			data->oy = 0;
 		else
 			data->oy -= n;
 		window_scroll_redraw_screen(wp);
 		break;
 	default:
 		break;
 	}
 }

 void
 window_scroll_write_line(
     struct window_pane *wp, struct screen_write_ctx *ctx, u_int py)
 {
 	struct window_scroll_mode_data	*data = wp->modedata;
 	struct screen			*s = &data->screen;
 	struct options			*oo = &wp->window->options;
 	struct grid_cell		 gc;
 	char				 hdr[32];
 	size_t	 			 size;

 	if (py == 0) {
 		memcpy(&gc, &grid_default_cell, sizeof gc);
 		size = xsnprintf(hdr, sizeof hdr,
 		    "[%u,%u/%u]", data->ox, data->oy, screen_hsize(&wp->base));
 		colour_set_fg(&gc, options_get_number(oo, "mode-fg"));
 		colour_set_bg(&gc, options_get_number(oo, "mode-bg"));
 		gc.attr |= options_get_number(oo, "mode-attr");
 		screen_write_cursormove(ctx, screen_size_x(s) - size, 0);
 		screen_write_puts(ctx, &gc, "%s", hdr);
 		memcpy(&gc, &grid_default_cell, sizeof gc);
 	} else
 		size = 0;

 	screen_write_cursormove(ctx, 0, py);
 	screen_write_copy(ctx, &wp->base, data->ox, (screen_hsize(&wp->base) -
 	    data->oy) + py, screen_size_x(s) - size, 1);
 }

 void
 window_scroll_write_column(
     struct window_pane *wp, struct screen_write_ctx *ctx, u_int px)
 {
 	struct window_scroll_mode_data	*data = wp->modedata;
 	struct screen			*s = &data->screen;

 	screen_write_cursormove(ctx, px, 0);
 	screen_write_copy(ctx, &wp->base, data->ox + px,
 	    screen_hsize(&wp->base) - data->oy, 1, screen_size_y(s));
 }

 void
 window_scroll_redraw_screen(struct window_pane *wp)
 {
 	struct window_scroll_mode_data	*data = wp->modedata;
 	struct screen			*s = &data->screen;
 	struct screen_write_ctx	 	 ctx;
 	u_int				 i;

 	screen_write_start(&ctx, wp, NULL);
 	for (i = 0; i < screen_size_y(s); i++)
 		window_scroll_write_line(wp, &ctx, i);
 	screen_write_stop(&ctx);
 }

 void
 window_scroll_scroll_up(struct window_pane *wp)
 {
 	struct window_scroll_mode_data	*data = wp->modedata;
 	struct screen_write_ctx		 ctx;

 	if (data->oy >= screen_hsize(&wp->base))
 		return;
 	data->oy++;

 	screen_write_start(&ctx, wp, NULL);
 	screen_write_cursormove(&ctx, 0, 0);
 	screen_write_insertline(&ctx, 1);
 	window_scroll_write_line(wp, &ctx, 0);
 	window_scroll_write_line(wp, &ctx, 1);
 	screen_write_stop(&ctx);
 }

 void
 window_scroll_scroll_down(struct window_pane *wp)
 {
 	struct window_scroll_mode_data	*data = wp->modedata;
 	struct screen			*s = &data->screen;
 	struct screen_write_ctx		 ctx;

 	if (data->oy == 0)
 		return;
 	data->oy--;

 	screen_write_start(&ctx, wp, NULL);
 	screen_write_cursormove(&ctx, 0, 0);
 	screen_write_deleteline(&ctx, 1);
 	window_scroll_write_line(wp, &ctx, screen_size_y(s) - 1);
 	window_scroll_write_line(wp, &ctx, 0);
 	screen_write_stop(&ctx);
 }

 void
 window_scroll_scroll_right(struct window_pane *wp)
 {
 	struct window_scroll_mode_data	*data = wp->modedata;
 	struct screen			*s = &data->screen;
 	struct screen_write_ctx		 ctx;
 	u_int		 		 i;

 	if (data->ox >= SHRT_MAX)
 		return;
 	data->ox++;

 	screen_write_start(&ctx, wp, NULL);
 	for (i = 1; i < screen_size_y(s); i++) {
 		screen_write_cursormove(&ctx, 0, i);
 		screen_write_deletecharacter(&ctx, 1);
 	}
 	window_scroll_write_column(wp, &ctx, screen_size_x(s) - 1);
 	window_scroll_write_line(wp, &ctx, 0);
 	screen_write_stop(&ctx);
 }

 void
 window_scroll_scroll_left(struct window_pane *wp)
 {
 	struct window_scroll_mode_data	*data = wp->modedata;
 	struct screen			*s = &data->screen;
 	struct screen_write_ctx		 ctx;
 	u_int		 		 i;

 	if (data->ox == 0)
 		return;
 	data->ox--;

 	screen_write_start(&ctx, wp, NULL);
 	for (i = 1; i < screen_size_y(s); i++) {
 		screen_write_cursormove(&ctx, 0, i);
 		screen_write_insertcharacter(&ctx, 1);
 	}
 	window_scroll_write_column(wp, &ctx, 0);
 	window_scroll_write_line(wp, &ctx, 0);
 	screen_write_stop(&ctx);
 }
	/* $Id: window-scroll.c,v 1.41 2009-09-11 14:13:52 tcunha Exp $ */

	/*
	* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
	*
	* Permission to use, copy, modify, and distribute this software for any
	* purpose with or without fee is hereby granted, provided that the above
	* copyright notice and this permission notice appear in all copies.
	*
	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
	* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
	* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	*/

	#include <sys/types.h>

	#include <string.h>

	#include "tmux.h"

	struct screen window_scroll_init(struct window_pane );
	void window_scroll_free(struct window_pane *);
	void window_scroll_resize(struct window_pane *, u_int, u_int);
	void window_scroll_key(struct window_pane , struct client , int);

	void window_scroll_redraw_screen(struct window_pane *);
	void window_scroll_write_line(
	struct window_pane , struct screen_write_ctx , u_int);
	void window_scroll_write_column(
	struct window_pane , struct screen_write_ctx , u_int);

	void window_scroll_scroll_up(struct window_pane *);
	void window_scroll_scroll_down(struct window_pane *);
	void window_scroll_scroll_left(struct window_pane *);
	void window_scroll_scroll_right(struct window_pane *);

	const struct window_mode window_scroll_mode = {
	window_scroll_init,
	window_scroll_free,
	window_scroll_resize,
	window_scroll_key,
	NULL,
	NULL,
	};

	struct window_scroll_mode_data {
	struct screen screen;

	struct mode_key_data mdata;

	u_int ox;
	u_int oy;
	};

	struct screen *
	window_scroll_init(struct window_pane *wp)
	{
	struct window_scroll_mode_data *data;
	struct screen *s;
	struct screen_write_ctx ctx;
	u_int i;
	int keys;

	wp->modedata = data = xmalloc(sizeof *data);
	data->ox = 0;
	data->oy = 0;

	s = &data->screen;
	screen_init(s, screen_size_x(&wp->base), screen_size_y(&wp->base), 0);
	s->mode &= ~MODE_CURSOR;

	keys = options_get_number(&wp->window->options, "mode-keys");
	if (keys == MODEKEY_EMACS)
	mode_key_init(&data->mdata, &mode_key_tree_emacs_copy);
	else
	mode_key_init(&data->mdata, &mode_key_tree_vi_copy);

	screen_write_start(&ctx, NULL, s);
	for (i = 0; i < screen_size_y(s); i++)
	window_scroll_write_line(wp, &ctx, i);
	screen_write_stop(&ctx);

	return (s);
	}

	void
	window_scroll_free(struct window_pane *wp)
	{
	struct window_scroll_mode_data *data = wp->modedata;

	screen_free(&data->screen);
	xfree(data);
	}

	void
	window_scroll_pageup(struct window_pane *wp)
	{
	struct window_scroll_mode_data *data = wp->modedata;
	struct screen *s = &data->screen;
	u_int n;

	n = 1;
	if (screen_size_y(s) > 2)
	n = screen_size_y(s) - 2;
	if (data->oy + n > screen_hsize(&wp->base))
	data->oy = screen_hsize(&wp->base);
	else
	data->oy += n;

	window_scroll_redraw_screen(wp);
	}

	void
	window_scroll_resize(struct window_pane *wp, u_int sx, u_int sy)
	{
	struct window_scroll_mode_data *data = wp->modedata;
	struct screen *s = &data->screen;
	struct screen_write_ctx ctx;
	u_int i;

	screen_resize(s, sx, sy);
	screen_write_start(&ctx, NULL, s);
	for (i = 0; i < screen_size_y(s); i++)
	window_scroll_write_line(wp, &ctx, i);
	screen_write_stop(&ctx);
	}

	void
	window_scroll_key(struct window_pane wp, unused struct client c, int key)
	{
	struct window_scroll_mode_data *data = wp->modedata;
	struct screen *s = &data->screen;
	u_int n;

	switch (mode_key_lookup(&data->mdata, key)) {
	case MODEKEYCOPY_CANCEL:
	window_pane_reset_mode(wp);
	break;
	case MODEKEYCOPY_LEFT:
	window_scroll_scroll_left(wp);
	break;
	case MODEKEYCOPY_RIGHT:
	window_scroll_scroll_right(wp);
	break;
	case MODEKEYCOPY_UP:
	window_scroll_scroll_up(wp);
	break;
	case MODEKEYCOPY_DOWN:
	window_scroll_scroll_down(wp);
	break;
	case MODEKEYCOPY_PREVIOUSPAGE:
	window_scroll_pageup(wp);
	break;
	case MODEKEYCOPY_NEXTPAGE:
	n = 1;
	if (screen_size_y(s) > 2)
	n = screen_size_y(s) - 2;
	if (data->oy < n)
	data->oy = 0;
	else
	data->oy -= n;
	window_scroll_redraw_screen(wp);
	break;
	case MODEKEYCOPY_HALFPAGEUP:
	n = screen_size_y(s) / 2;
	if (data->oy + n > screen_hsize(&wp->base))
	data->oy = screen_hsize(&wp->base);
	else
	data->oy += n;
	window_scroll_redraw_screen(wp);
	break;
	case MODEKEYCOPY_HALFPAGEDOWN:
	n = screen_size_y(s) / 2;
	if (data->oy < n)
	data->oy = 0;
	else
	data->oy -= n;
	window_scroll_redraw_screen(wp);
	break;
	default:
	break;
	}
	}

	void
	window_scroll_write_line(
	struct window_pane wp, struct screen_write_ctx ctx, u_int py)
	{
	struct window_scroll_mode_data *data = wp->modedata;
	struct screen *s = &data->screen;
	struct options *oo = &wp->window->options;
	struct grid_cell gc;
	char hdr[32];
	size_t size;

	if (py == 0) {
	memcpy(&gc, &grid_default_cell, sizeof gc);
	size = xsnprintf(hdr, sizeof hdr,
	"[%u,%u/%u]", data->ox, data->oy, screen_hsize(&wp->base));
	colour_set_fg(&gc, options_get_number(oo, "mode-fg"));
	colour_set_bg(&gc, options_get_number(oo, "mode-bg"));
	gc.attr \|= options_get_number(oo, "mode-attr");
	screen_write_cursormove(ctx, screen_size_x(s) - size, 0);
	screen_write_puts(ctx, &gc, "%s", hdr);
	memcpy(&gc, &grid_default_cell, sizeof gc);
	} else
	size = 0;

	screen_write_cursormove(ctx, 0, py);
	screen_write_copy(ctx, &wp->base, data->ox, (screen_hsize(&wp->base) -
	data->oy) + py, screen_size_x(s) - size, 1);
	}

	void
	window_scroll_write_column(
	struct window_pane wp, struct screen_write_ctx ctx, u_int px)
	{
	struct window_scroll_mode_data *data = wp->modedata;
	struct screen *s = &data->screen;

	screen_write_cursormove(ctx, px, 0);
	screen_write_copy(ctx, &wp->base, data->ox + px,
	screen_hsize(&wp->base) - data->oy, 1, screen_size_y(s));
	}

	void
	window_scroll_redraw_screen(struct window_pane *wp)
	{
	struct window_scroll_mode_data *data = wp->modedata;
	struct screen *s = &data->screen;
	struct screen_write_ctx ctx;
	u_int i;

	screen_write_start(&ctx, wp, NULL);
	for (i = 0; i < screen_size_y(s); i++)
	window_scroll_write_line(wp, &ctx, i);
	screen_write_stop(&ctx);
	}

	void
	window_scroll_scroll_up(struct window_pane *wp)
	{
	struct window_scroll_mode_data *data = wp->modedata;
	struct screen_write_ctx ctx;

	if (data->oy >= screen_hsize(&wp->base))
	return;
	data->oy++;

	screen_write_start(&ctx, wp, NULL);
	screen_write_cursormove(&ctx, 0, 0);
	screen_write_insertline(&ctx, 1);
	window_scroll_write_line(wp, &ctx, 0);
	window_scroll_write_line(wp, &ctx, 1);
	screen_write_stop(&ctx);
	}

	void
	window_scroll_scroll_down(struct window_pane *wp)
	{
	struct window_scroll_mode_data *data = wp->modedata;
	struct screen *s = &data->screen;
	struct screen_write_ctx ctx;

	if (data->oy == 0)
	return;
	data->oy--;

	screen_write_start(&ctx, wp, NULL);
	screen_write_cursormove(&ctx, 0, 0);
	screen_write_deleteline(&ctx, 1);
	window_scroll_write_line(wp, &ctx, screen_size_y(s) - 1);
	window_scroll_write_line(wp, &ctx, 0);
	screen_write_stop(&ctx);
	}

	void
	window_scroll_scroll_right(struct window_pane *wp)
	{
	struct window_scroll_mode_data *data = wp->modedata;
	struct screen *s = &data->screen;
	struct screen_write_ctx ctx;
	u_int i;

	if (data->ox >= SHRT_MAX)
	return;
	data->ox++;

	screen_write_start(&ctx, wp, NULL);
	for (i = 1; i < screen_size_y(s); i++) {
	screen_write_cursormove(&ctx, 0, i);
	screen_write_deletecharacter(&ctx, 1);
	}
	window_scroll_write_column(wp, &ctx, screen_size_x(s) - 1);
	window_scroll_write_line(wp, &ctx, 0);
	screen_write_stop(&ctx);
	}

	void
	window_scroll_scroll_left(struct window_pane *wp)
	{
	struct window_scroll_mode_data *data = wp->modedata;
	struct screen *s = &data->screen;
	struct screen_write_ctx ctx;
	u_int i;

	if (data->ox == 0)
	return;
	data->ox--;

	screen_write_start(&ctx, wp, NULL);
	for (i = 1; i < screen_size_y(s); i++) {
	screen_write_cursormove(&ctx, 0, i);
	screen_write_insertcharacter(&ctx, 1);
	}
	window_scroll_write_column(wp, &ctx, 0);
	window_scroll_write_line(wp, &ctx, 0);
	screen_write_stop(&ctx);
	}